hi, have just bought galaxy ghia with factory fitted dvd player, screens in both headrests. picture o.k., but sound only through headphone sockets. is this correct, or should every one in the car be able to hear it? also radio says "phone" and the only way to get the radio/cd player working is to hold buttons 5and 6 in for a few seconds ( the radio is a 6000) then a peculiar number comes up on the readout and full volume works o.k. after that. nothing in the hand book about it, so can you help please. thanks, alf.
